依索拉CDM PCB装配线用复合材料，俗称“合成石”。是全球著名的工程塑胶/绝缘材料制造商---瑞士依索拉（vonRoll ISOLA）绝缘材料有限公司制造的一种辅助PCB焊接装配与测试的玻璃纤维增强塑胶，其玻璃纤维含量超过70%。CDM PCB装配线用复合材料现被广泛应用于SMT模板印刷、元件贴装、回流焊接、波峰焊接及手工焊接等各个PCB装配工艺过程中。CDM PCB装配线用复合材料为PCB装配工艺自动化创造条件，减少人工操作。同时，可多个PCB同时放置与焊接，减少了PCB的装载与转移，大大提高了装配速度。而且，在整个生产阶段对PCB有支撑保护作用。CDM PCB装配线用复合材料的耐高温性能极佳，工作温度可达350度，最高耐温可达400度。是目前市面上耐温最高的合成石材料，完全适合无铅工艺。
CDM ESD LF 68950
►******* NEW CDM REFERENCE *******
►Good performances with lead free soldering process.
►Increased mechanical stability at high temperatures.
►Lead Free applications : very good temperature performances for high Lead Free temperatures -
higher than 300°C.
►Excellent flux resistance.
►Dissipative material. Surface resistivity 10E5 to 10E9 Ohm/Square.
►Optical sensitiveness : green color enables an easy and improved detection by infra-red cells.
►Excellent dimensional stability and improved machineability.
General description
The new CDM ESD LF 68950 has been especially developed for the Lead Free applications with higher temperatures of pre-heat
and soldering as well as longer contact time.
Excellent stability at high temperature to increase life cycles of pallets.
CDM ESD LF 68950 is a dissipative material. Its green color allows an easy segregation of lead free pallets from non Lead Free
fixtures.
The random glass mat substrate present in CDM ESD LF 68950 minimizes delaminations problems during machining or pallet use.
The relative low thermal conductivity in the CDM materials allows a rapid pallet turnaround eliminating most of the time both the
necessity to provide a cooling station and the process heat sink effect experienced in the metallic pallets.
CDM materials can substitute metallic solder frames (or other materials) with great advantages.
Flux resistance is depending on flux composition and pH level. Highly acid as well as basic fluxes often require a regular cleaning of
remaining powders in order to preserve the stability of CDM material.
Due to the high fiberglass content, machining is recommended with carbide or diamond toolings. Precise machining with very
accurate tolerances can be achieved by experts in the conception and machining of pallets.
Description
CDM ESD LF 68950 is a composite material made of glass mat, combined with a high mechanical resistance resin system.
Color : Green
Dimensions
CDM ESD LF 68950 is available in standard sheet size : 2350 +/-10mm x 1335 +/- 10mm and standard thicknesses 5, 6, 8, 10 and
12mm.
For other sheet sizes and thicknesses, please consult us.
Application
Can be used in lead free process
Full process solder wave, SMT and selective soldering process
Components insertion
SMT placement
Reflow soldering
Components protection
Testing of PCBs
Cleaning of PCB boards
Mechanical properties
Value
Test norm
Flexural strength at 150°C, flatwise
Flexural strength at 200°C, flatwise
Flexural strength at 250°C, flatwise
Modulus of elasticity in flexure at 150°C, flatwise
Modulus of elasticity in flexure at 200°C, flatwise
Modulus of elasticity in flexure at 250°C, flatwise
Electrical properties
Surface resistivity
Thermal properties
Thermal conductivity
Physical properties
Density
Water absorption 24h 23°C
Linear coefficient of thermal expansion, parallel
RoHS Directive
MPa
MPa
MPa
MPa
MPa
MPa
Ohm/square
W/m.K
g/cm³
%
K-1
220
180
100
16000
12000
9000
10E5 to 10E9
0.3
1.9 ±0.1
<0.10
10.10-6
ISO 178
ISO 178
ISO 178
ISO 178
ISO 178
ISO 178
IEC 60093
DIN 52612
ISO 1183 (method A)
ISO 62 (method 1)
VSM 77110
